Document the 2000 complete scene augmentation release

README.md

@@ -34,3 +34,9 @@ The source package reports complete static auditing of 2,600 variants and zero d
 ## Sources and usage terms
 
 The release combines self-developed assets and scenes with publicly available source data, including HSSD-derived objects and SceneSmith source scenes. The data owner has confirmed that these components may be redistributed. Upstream components retain their respective usage terms; this repository does not assign a blanket license to all components. A source/attribution inventory is provided in `SOURCES.md`.
+
+## Scene augmentation release — 2026-09-30
+
+[`scenes/augmentation_20260930`](scenes/augmentation_20260930) contains **2,000 complete scene compositions** from **9 source scenes** (8 single-room scenes × 222 variants, plus one four-room apartment × 224). This batch includes 1,800 existing compositions and 200 additional compositions; these are augmented layouts, not 2,000 distinct base scenes. Robot trajectories are not included. The earlier release and standalone asset collections are unchanged.
+
+Use this batch's `complete_scenes.csv` or `complete_scenes.jsonl` as the authoritative complete-scene list. Download the entire batch to retain its required model/material/texture dependencies. USD paths are relative to the batch root; preserve the directory layout. See the batch README for Isaac Sim 5.1 usage, source attribution and validation scope. The source delivery reports full static checks; dynamic physics was sampled on 18 complete scenes / 720 added objects, not all 2,000 scenes.